Putro, Ledis Heru Saryono, et al. “Modeling Methane Emission of Wastewater Anaerobic Pond at Palm Oil Mill Using Radial Basis Function Neural Network”. International Journal on Advanced Science, Engineering and Information Technology, vol. 10, no. 1, Feb. 2020, pp. 260-8, doi:10.18517/ijaseit.10.1.9577.